@keyframes shimmer {
    0% {
        background-position: -400% 0;
    }
    100% {
        background-position: 400% 0;
    }
}

.skeleton-bg {
    background: linear-gradient(90deg, rgba(240, 240, 240, 1) 25%, rgba(225, 225, 225, 1) 37%, rgba(240, 240, 240, 1) 63%);
    background-size: 400% 100%;
    animation: shimmer 3s linear infinite;
}